PYTHON-3543 Broken Links for ICU Project (#1129)

Author: blink1073

doc/examples/collations.rst

@@ -42,7 +42,7 @@ or with plain Python dictionaries. The structure is the same::
              backwards=<bool>)
 
 The only required parameter is ``locale``, which the server parses as
-an `ICU format locale ID <http://userguide.icu-project.org/locale>`_.
+an `ICU format locale ID <https://www.mongodb.com/docs/manual/reference/collation-locales-defaults/>`_.
 For example, set ``locale`` to ``en_US`` to represent US English
 or ``fr_CA`` to represent Canadian French.
 

pymongo/collation.py

@@ -14,7 +14,7 @@
 
 """Tools for working with `collations`_.
 
-.. _collations: http://userguide.icu-project.org/collation/concepts
+.. _collations: https://www.mongodb.com/docs/manual/reference/collation/
 """
 from typing import Any, Dict, Mapping, Optional, Union